Demonstration of Magnetic Dipole Resonances of Dielectric Nanospheres in the Visible Region
Nano Letters2012Vol. 12(7), pp. 3749–3755
Citations Over TimeTop 1% of 2012 papers
Andrey B. Evlyukhin, Sergey M. Novikov, Urs Zywietz, René Lynge Eriksen, Carsten Reinhardt, Sergey I. Bozhevolnyi, Boris N. Chichkov
Abstract
Strong resonant light scattering by individual spherical Si nanoparticles is experimentally demonstrated, revealing pronounced resonances associated with the excitation of magnetic and electric modes in these nanoparticles. It is shown that the low-frequency resonance corresponds to the magnetic dipole excitation. Due to high permittivity, the magnetic dipole resonance is observed in the visible spectral range for Si nanoparticles with diameters of ∼200 nm, thereby opening a way to the realization of isotropic optical metamaterials with strong magnetic responses in the visible region.
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